Paper-feed device



June 8 1926.

P. W. FLEISCHER PAPER FEED DEVICE Filed Oct. ,1921 2 sheets-sheet 1 'mwmrok Bull 1/. ['Zezlsrler er o A TTORNE Y.S

June 8 1926. 1,587,639

P. w. FLEISCHER PAPER FEED DEVICE Filed Oct. 17, 1921 2 SheetEs-Sheet 2 INVENTOR Bea Z Mflez'sc/ er BY WWMM Patented June 8, 1926.

UNITED STATES PATENT OFFICE.

PAUL W. FLEISCHER, OF WEEHAWKEN, NEW JERSEY, ASSIGNOR TO NEW JERSEY MACHINE GORIOBA'I'ION, OF HOBOKEN, NEW JERSEY, A CORPORATION OF NEW JERSEY.

PAPER-FEED DEVICE.

Application filed October 17, 1921. Serial No. 508,354.

This invention relates to means for feeding paper or "like flexible material in the form of strips, and while intended primarily for use in connection with machines 1n which a gummed strip of paper orlike ma-. terial is to be wrapped around the body or the cover of a box, in the manufacture of pasteboard boxes, my invention is suscept1- ble of being used in other connectlons.

The object of the presentinvention is to provide an improved feed device of the above-indicated character which. will be positive in its action under normal condltions, which will arrest the feeding action automatically when an excessive amount of paper would be fed otherwise, and which will allow the paper to be inserted or threaded into position readily at the beginning of the operation.

A typical and satisfactory embodiment of my invention will now be described in detail with reference to the accompanying drawings, and the novel features will then be pointed out in the appended claims.

In the said drawings, Fig. 1 is a side elevation of a portion of a machine to which my improvement has been applied; Fig. 2 is a perspective view of certain parts, on an cnlargedscale; Fig. 3 is a still more enlarged view of the upper right-hand portion of Fig. 2, with parts 1n section, Figs. 2 and 3 representing the machine as seen from opposite sides; and Fig. 4 is a detail vertical section.

The machine has a stationary frame a portion of which is indicated at 10. In standards 11 is journaled the roll or coil 12 of paper or other flexible material, which is paid out from said roll as a strip 13 passing over and under guides 14, 15, and 16 (the latter of which is indicated as a pivoted guide bearing by its weight on the paper strip and thus placing it under tension) and such strip 13 then receives mucilage, paste, or other adhesive upon one of its surfaces by coming in contact with a gumming roll 17 rotating in contact with another roll 18 which dips into the bath of paste or the like contained in the tank or trough 19. The gummed strip 13 is then led in contact with guides 20 and 21 to a feed roller 22. In the particular embodiment illustrated, a single strip 13 is shown, but I desire it to be unclerstood that I do not wish to be restricted to this, but my invention may be utilized in connection with flexible strips of the denble or multiple type common 1n this art, in

which case two or more strips would be led to the feed roller 22. Since mechanism for combining two or more strips is well-known in the art, the illustration hereingiven will suflice.

On the feed roller 22 is pivoted eccentrically a pawl 23, which aspring 24 presses inwardly, into contact with the teeth of a ratchet wheel 25 which is held to turn in unison with a shaft 26 journaled in stationary bearings, 'the feed roller 22 being mounted loosely on this shaft. The shaft 26 is driven in any suitable manner, for instance by means of a pulley 27 held to turn with said shaft and a drive belt 28 engaging said pulley.

On the shaft 26 is further mounted to rotate in unison therewith, a toothed wheel 29, in mesh with a gear wheel 30 of the same diameter, this latter wheel being mounted to turn with a shaft 31 journaled in an arm 32 which is pivotally mounted on the frame 1.0 at 33, so that the wheel 30 may be carried toward or away from its companion wheel 29, without however bringing saidwheels out of mesh. On the shaft 31 is mounted, to rotate therewith, a feed disk 34, which engages the paper strip 13 from above, on the gummed surface, while the lower ungummed surface of said strip bears on the feed roller 22. The disk 34, being very narrow and grooved (Fig. 4) at its periphery or edge, will not remove any material amount of adhesive from the gummed side of the paper. Preferably the disk 34 is adjustable lengthwise of the shaft 31, as by mounting it slidably on the shaft, and locking it in position after adjustment by a set screw or other suitable means. While I have shown a single feed disk 34 on the shaft 31, it will be obvious that the construction illustrated admits of placing two or more such disks on said shaft, and this is particularly desirable when the strip 13 is relatively wide. In or er to regulate the force with which the feed disk 34 bears down on the strip 13, I may provide the arm 32 with an extension 35 to which is secured a weight 36 adjustable lengthwise of said extension and secured in position thereon by a set screw or other suitable means. To prevent the gummed a ed from adhering to he disk 3% sad i lo e he a er a the side where it rotates away from the roller 22, I may secure on the arm 32, a rod 37 parallel to the shafts 26 and 31 and carrying a forked normally stationary stop or guard 38, which is adjustable lengthwise of said rod and locked in position by a set screw or otherwise.

The arm 32 has an abutment 39 projecting therefrom downwardly, said abutment being preferably adjustable Vertically relatively to the arm 32; the abutment 39 is adapted to be enga'ged by a movable lifter bar 40, one end of which is fulcrumed on a stationar bracket 41, the other end being connected pivotally with the upper end of a link 42 having a like connection at its lower end with one arm of an elbow lever '43 likewise fulcrumed on the bracket 41.

The other arm of the lever 43 is pivotally connected with the upper end of a link 44 having a like connection at its lower end with an arm 45 on a rock-shaft 46 journaled in stationary bearings. A spring 47 exerts an upward pull on the link 44 and tends to bring the parts to the normal position indicated in full lines in Fig. 3 and also shown in the other views. The shaft 46 also has another arm 48 with the free end of which is connected pivotally one end of a bar 49, the other end of which is connected pivotally at 50 with an arm 51 mounted loosely on a rock shaft 52 journaled in stationary bearings. On this shaft 52 is secured so as to rock in unison therewith, an arm or sector 53 provided with a lug 54 which projects into the plane or path of the lower 'end of the arm 51, said lower end extending materially beyond the pivot joint 50. To

, the sector 53 is secured a flexible connection (wire) 55 passing over a pulley or other guide 56 which is mounted on the frame 10, a Weight 57 being attached to the free end of said connection.

The sector 53 is further provided with an arm or extension 58 from which projects laterally a rod 59 parallel to the shafts 26,

31 and carrying loosely a roller 60, shown as made with a series of peripheral ribs, the narrow edges of said ribs bemg adapted to engage the gummed side of the paper strip 13. Between the roller 60 and the feed mechanism 22, 34, the un'gummed side of the paper is engaged by an additional guide 61. From the ide roller 60 the paper passes on to a tab e 62, and at 63 I have indicated a gripper forming part of a mechanism by which, through a to-and-fro movement, the strip 13, at the portion beyond the roller 60, is given an intermittent feed motion. That is to say, while such intermittent feed device moves toward the right in Fig. 1, the paper portion shown at the left remains stationar but while such feed device moves toward t e left, it carries the paper with it. The weight of the roller 60, rod 59, and arm 58 (which is not fully balanced by the weight 57) tends to ull the paper down into a loop or bight tween the table 62 and the guide 61,v as shown.

The operation is as follows: When the intermittently-acting feed device indicated at 62, 63 (this device may be of a type known in this art, and forms no part, per se, of my present invention) has completed its stroke to the right, which is its inactive or return stroke, the parts are in the position indicated by full lines in Fig. 1, the lug 54 being in contact with the lower end of the arm 51, and having swung said arm toward the left, as indicated by the arrow in Fig.2. Such movement of the arm 51 is transmitted by the bar 49 to the arm 48 of the rock shaft 46, the link 44 is raised, and the parts 43, 42, 40, 32, 35, .38, 34 shifted to the position indicated by dotted lines in Fig. 3, so that althou h the feed roller 22 continues to rotate, it as no feedin'g action on the paper because the downward pressure of the disk 34 is lacking. At this time, therefore, the paper is stationary for a moment. As soon as a pull is exerted on the left-hand portion of the paper at 62, 63 (Fig. 1), the bight becomes shallower, as indicated by dotted lines, since the rod 59 and the roller 60 thereon are raised by the pull of the intermittently-acting feed device. This brings the lug 54 out of contact with the arm 51, and by the action of the spring 47 this arm and the parts 49, 48, 46, 45, 44 43, 42 and the lifter bar 40 are brought to their active or normal position in which the disk 34 is lowered to bear the paper strip 13 against the feed roller 22, so that the paper will be fed by the action of said roller 22, and also by therotating disk 34. This action will continue until the amount of paper fed has increased the depth of the loop or bight to such an extent as to a'gain bring the lug 54 against the arm 51, and through the medium of the latter bring the lifter bar 40 and the roller or disk 34 to their upper, inactive position. The operation is repeated automatically, as will be understood readily.

At the beginning of the operation, the pager strip 13 is threaded into the machine, an it will be noted that owing to the ratchet-and-pawl connection between the feed roller 22 and its operating shaft 26, it

is possible, even when said shaft is revolving, to pull the paper forwardly over said feed roller at the time of threading the .paper strip into the machine, the roller in this case being rotated faster by the pull of the paper than the motion it receives from the shaft 26. This is of importance, because owing to the large portion of the circumference of the roller 22 engaged by the paper, a very considerable resistance would be encountered if it were necessary, in thread ing the paper through the machine, to slip or slide thepaper in contact with the periphery of the feed roller, as would be the case if this roller were not able to turn, independently of its driving mechanism, at a speed corresponding to the linear speed at which the paper is being threaded into the machine.

I claim:

1. In a device of the class described, the combination of a feed-roller rotating continuously in one direction for feeding a web of material, a pressure member arranged to press said web into feeding engagement with said feed-roller, intermittently feeding-mechanism to which said feed roller delivers said web, a bight-forming roller engaging said web between the feed-roller and the intermittently feeding mechanism and by its weight forming a depending bight in said web, said bight-forming roller rising and falling with said, bight as the depth of the latter varies in accordance with the feed of the web, a pivoted lever on which said bight-forming roller is directly journalled, an operative connection between said lever and said pressure member whereby the latter is adjusted away from said feed-roller to interrupt the feeding engagement of the web therewith, when said bight descends to a predetermined point, and a weight connected with a lever for assisting in the lifting of said bight-forming roller when the bight rises by the action of the intermittently feeding mechanism.

2. In a device of the class described, a feed member rotating continuously in one direction, intermittently feeding mechanism to which said member delivers the material fed, a movable body arranged to press such material against the said feed member, a pivotally mounted lever, bight-forming means mounted directly thereon at a substantial distance from the pivotal point of said lever for engaging the said material between said feed member and said intermittently feeding mechanism, a weight connected with said lever for assisting in the lifting of said bight-forming means when the bight rises by the action of the intermittently feeding mechanism; a system of levers connected with said body, and a lost motion connection between said system of levers and said pivotally mounted lever to cause said system of lovers to move said body out of contact with said rotary feed member when said bight-forming means reaches a predetermined position.

3. In a web-feeding device, a pair of r0- tatable rollers, means for rotating said rollers continuously in one direction, one of said rollers being mounted for movement toward or from the other, intermittently feeding mechanism to which said rollers deliver the web, a bight-forming device comprising a pivotally mounted lever having a roller, directly mounted thereon at a substantial distance from the pivotal mounting of said lever, for engaging said Web between said pair of rollers and said intermittently feeding mechanism, and a weight connected with said lever for assisting in the lifting of said roller when the bight rises by the action of the intermittently feeding mechanism; a system of levers connected with said movably mounted roller and a lug projecting from said pivotally mounted lever adapted to engage a portion of said system of levers for actuating said lovers to move said movably mounted roller out of contact with its co-operating roller when said bight forming device reaches a predetermined position.

In testimony whereof I have signed this specification.

PAUL W. FLEISCHER. 

